Home / 10,952.43-15,115.75-7,178.79

Finding the Fourth Proportional to 10,952.43, 15,115.75 and 7,178.79

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Solution

The fourth proportional to 10,952.43, 15,115.75 and 7,178.79 is: 9,907.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,952.43 : 15,115.75 = 7,178.79 : x
  2. Step 2: Convert to fraction form
    10,952.43/15,115.75 = 7,178.79/x
  3. Step 3: Cross multiply
    10,952.43x = 15,115.75 × 7,178.79
  4. Step 4: Simplify right side
    10,952.43x = 108,512,794.94
  5. Step 5: Solve for x
    x = 108,512,794.94/10,952.43
  6. Step 6: Final answer
    x = 9,907.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.